Melting-furnace.



No. 650,726. Patented May 29, |900. F. W. MINCK.

MELTING FURNAGE.

(Application filed May 28, 1898.)

(No Modal.)

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FRIEDRICH WILHELM MINCK, OF BERLIN, GERMANY.

MELTme-FURNACE'.

SPECIFICATION forming part of Letters Patent No. 650,726, dated May 29, 1900.

Application filed May 28, 1898. Serial No. 682,038. (No model.)

To @ZZ whom it. may concern:

Be it known that I, FRIEDRICH WILHELM MINCK, manufacturer, a subject of the King of Prussia, Emperor of Germany, and a resident of Thurmstrasse No. 71, in the city of Berlin, German Empire, have invented certain new and useful Improvements in or Connected with Melting-Furnaces, (for which I have applied for patents as followsz' in Germany, November 1, 1897; in France, April 25, 1898; in Belgium, April 25, 1898; in Austria, April 28, 1898; in Hungary, April 28, 1898;'in England, April 27, 1898; in Italy, April 30, 1898, and in Spain May 5, 1898,) of which the following is a specification.

My invention relates to melting-furnaces; and its object is to provide means whereby steam, smoke, and similar bodies evolved during the alloying operations are discharged through the chimney and prevented from entering the working chamber or laboratory. The operator, therefore, is thus able to precisely observe the stream of melted metal during the alloying operation and to treat the same Without being put to inconvenience by the steam, smoke, or other bodies.

In the accompanying drawing a meltingfurnace to which the new arrangement is adapted is shown in longitudinal section.

a is the meltingpot; b, the fire-grate; c, the ash-pit; d, the replace; e, the outlet for the smoke, steam, dac. f, the chimney, and g a store-room for the ashes. The meltingpot a is filled with the material to be melted, closed with a suit-able cover, and placed in the fireplace CZ. The fireplace is then completely filled with fuel and after the fuel has been ignited is closed by means of a Stone plate, as usual. When the material has reached a molten state and is to be subjected to the operation of alloying, the fireplace d is opened, the glowing fuel above the meltingpot U. removed, the cover of the melting-pot lifted off, and the new protecting apparatus or alloy-hopper h suspended in the fireplace d. This apparatus is f unnel-shaped and rests on the supporting-rin g fi. over the space d. It is furnished with an openin g 7c at the bottom, by means of which a view of the melting-pot is obtainable. handles Z are attached to facilitate its introduction to and removal from the fireplace. The height of the funnel-shaped apparatus is so regulated that between .the bottom of the same and the upper edge of the melting-pot a a space m is left, through which the steam, smoke, and other bodies, produced during the alloying operation in process, can escape into the outlet e and thence to the chimney.

Vhat I claim as my invention, and desire to secure by Letters Patent, is'- The combinationin a melting-furnace, such asdescribed, of the vertically-extended hearth d, the chimney f, the lateral flue e substantially near the top of and connecting said hearth with the chimney, a lire-grate b, ashpit c below said grate,a-nd an ashreceiving box g extending laterally from below said pit and vertically upward beside the hearth, a melting-pot a borne upon said grate, the annular supporting-ring c' at the top of said hearth, and a flaring hopper h provided with handles l and with an opening 7s of substantially the same diameter as the mouth of the meltingpot, suspended directly over the melting-pot and forming an intermediate space for the escape of noxious gases to the chimney, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FRIEDRICH WILHELM MINCK.

Witnesses:

C. H. DAY, W. HAUPT.

To the top of the apparatus 

